On Fri, Jan 12, 2024 at 07:22:18AM -0700, Jens Axboe wrote: > Yep it is pretty cheap, but it's not free. Here's a test where we just > grab a ref and drop it, which should arguably be cheaper than doing a > ref at the top and dropping it at the bottom due to temporal locality: > > 5.01% +0.86% [kernel.vmlinux] [k] blk_mq_submit_bio Ok. Do you want to send out your version formally?
